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noun

epidemic

/ˌɛpɪˈdɛmɪk/  ·  say it: EP·uh·DEM·ik

a disease outbreak spreading rapidly in a region

In Medicine & Health

In more detail

1. (noun) a disease that spreads quickly and affects many people in an area at the same time

2. (noun) a rapid spread or outbreak of something undesirable

Examples

How to use epidemic

Epidemic is used for diseases or negative phenomena that spread widely and affect large populations in a defined geographic area, often implying urgency and public health concern. It carries a more alarming tone than outbreak but is less severe in scope than pandemic. The noun can be used metaphorically for crime, obesity, or other social problems spreading rapidly.

Common phrases

Synonyms

outbreak · plague · wave · surge · contagion

Word family

epidemics (plural) · epidemic (adjective) · epidemiological · epidemiology · epidemiologist

A common mistake

Learners sometimes confuse epidemic (affecting a large area or population) with endemic (naturally occurring or prevalent in a specific region), or incorrectly use epidemic when pandemic (affecting multiple continents or worldwide) is meant.

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